100121121200000 has 192 divisors, whose sum is σ = 249371576853840. Its totient is φ = 40038412800000.

The previous prime is 100121121199919. The next prime is 100121121200053. The reversal of 100121121200000 is 2121121001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1713170780 + ... + 1713229220.

Almost surely, 2^{100121121200000} is an apocalyptic number.

100121121200000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100121121200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124685788426920).

100121121200000 is an abundant number, since it is smaller than the sum of its proper divisors (149250455653840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100121121200000 is an frugal number, since it uses more digits than its factorization.

100121121200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62763 (or 62731 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100121121200000 its reverse (2121121001), we get a palindrome (100123242321001).

The spelling of 100121121200000 in words is "one hundred trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred thousand".